date.c: Remove all occurrences of g_return_val_if_fail

[notmuch] / xapian-dump.cc

diff --git a/xapian-dump.cc b/xapian-dump.cc
index 0ab5e32c7cb6f4f1810a07ec026e903f0bc38a26..39c1c3404b02c13e6d01d1c3dfbe944503d63778 100644 (file)
--- a/xapian-dump.cc
+++ b/xapian-dump.cc
@@ -1,4 +1,4 @@
-/* xapian-dump: Dump all document IDs from a Xapian database
+/* xapian-dump: Create a textual dump of a Xapian database.
  *
  * Copyright © 2009 Carl Worth
  *
@@ -18,38 +18,183 @@
  * Author: Carl Worth <cworth@cworth.org>
  */
 
+/* Currently the dumped data includes:
+ *
+ *     All document IDs
+ *
+ * And for each document ID:
+ *
+ *     Document data
+ *     All document terms
+ *     All document values
+ */
+
 #include <cstdlib>
 #include <iostream>
+#include <algorithm>
 
 #include <xapian.h>
 
 using namespace std;
 
+vector<int> UNSERIALIZE;
+
+unsigned int MAX_TERMS = 0;
+
+static void
+print_escaped_string (const char *s)
+{
+    printf ("\"");
+
+    while (*s) {
+       if (*s == '"')
+           printf ("\\");
+       printf ("%c", *s);
+       s++;
+    }
+
+    printf ("\"");
+}
+
+static void
+print_document_terms (Xapian::Document doc)
+{
+    Xapian::TermIterator it;
+    unsigned int i;
+
+    printf ("    {\n");
+
+    for (it = doc.termlist_begin (), i = 0;
+        it != doc.termlist_end ();
+        it++, i++)
+    {
+       printf ("        ");
+       print_escaped_string ((*it).c_str());
+       printf (",\n");
+    }
+
+    for ( ; i < MAX_TERMS; i++)
+       printf ("        \"\",\n");
+
+    printf ("    },\n");
+}
+
+static int
+vector_int_contains (vector<int> v, int i)
+{
+    vector<int>::iterator result;
+
+    result = find (v.begin(), v.end(), i);
+
+    return result != v.end();
+}
+
+static void
+print_document_values (Xapian::Document doc)
+{
+    Xapian::ValueIterator i;
+    int value_no, value_int;
+    double value_float;
+
+    for (i = doc.values_begin (); i != doc.values_end (); i++) {
+       value_no = i.get_valueno();
+
+       printf ("    ");
+
+       if (vector_int_contains (UNSERIALIZE, value_no)) {
+           value_float = Xapian::sortable_unserialise (*i);
+           value_int = value_float;
+           if (value_int == value_float)
+               printf ("%d", value_int);
+           else
+               printf ("\"%f\"", value_float);
+       } else {
+           print_escaped_string ((*i).c_str ());
+       }
+
+       printf (",\n");
+    }
+
+}
+
+static void
+print_document (Xapian::Database db, Xapian::docid id)
+{
+    Xapian::Document doc;
+
+    printf ("{\n");
+
+    doc = db.get_document (id);
+
+    printf ("    \"%s\",\n", doc.get_data ().c_str());
+
+    print_document_terms (doc);
+
+    print_document_values (doc);
+
+    printf ("},\n");
+}
+
 int
 main (int argc, char *argv[])
 {
     const char *database_path;
+    int i;
 
     if (argc < 2) {
-       fprintf (stderr, "Usage: %s <path-to-xapian-database>\n",
+       fprintf (stderr, "Usage: %s <path-to-xapian-database> [value_nos...]\n",
                 argv[0]);
+       fprintf (stderr, "Dumps data from the given database.\n");
+       fprintf (stderr, "The values corresponding to any value numbers given on the command line\n");
+       fprintf (stderr, "will be unserialized to an before being printed.\n");
        exit (1);
     }
 
     database_path = argv[1];
 
-    try {
+    UNSERIALIZE = vector<int> ();
 
+    for (i = 2; i < argc; i++)
+       UNSERIALIZE.push_back (atoi (argv[i]));
+
+    try {
        Xapian::Database db;
         Xapian::PostingIterator i;
        Xapian::docid doc_id;
 
        db = Xapian::Database (database_path);
+
        for (i = db.postlist_begin (""); i != db.postlist_end (""); i++) {
+           Xapian::Document doc;
+
            doc_id = *i;
-           printf ("Found document %u\n", doc_id);
+
+           doc = db.get_document (doc_id);
+
+           if (doc.termlist_count () > MAX_TERMS)
+               MAX_TERMS = doc.termlist_count ();
        }
 
+       printf ("#define MAX_TERMS %d\n\n", MAX_TERMS);
+
+       printf ("typedef struct {\n"
+               "    char data[255];\n"
+               "    char terms[MAX_TERMS][255];\n"
+               "    char message_id[255];\n"
+               "    char thread_id[4096];\n"
+               "    time_t time;\n"
+               "} document_dump_t;\n\n");
+
+       printf ("document_dump_t dump[] = {\n");
+
+       for (i = db.postlist_begin (""); i != db.postlist_end (""); i++) {
+           doc_id = *i;
+
+           print_document (db, doc_id);
+       }
+
+       printf ("};\n");
+
     } catch (const Xapian::Error &error) {
        cerr << "A Xapian exception occurred: " << error.get_msg () << endl;
        exit (1);